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- /*
- * (C) Copyright 2011 - 2012 Samsung Electronics
- * EXT4 filesystem implementation in Uboot by
- * Uma Shankar <uma.shankar@samsung.com>
- * Manjunatha C Achar <a.manjunatha@samsung.com>
- *
- * Ext4fs support
- * made from existing cmd_ext2.c file of Uboot
- *
- * (C) Copyright 2004
- * esd gmbh <www.esd-electronics.com>
- * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
- *
- * made from cmd_reiserfs by
- *
- * (C) Copyright 2003 - 2004
- * Sysgo Real-Time Solutions, AG <www.elinos.com>
- * Pavel Bartusek <pba@sysgo.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- *
- */
- /*
- * Changelog:
- * 0.1 - Newly created file for ext4fs support. Taken from cmd_ext2.c
- * file in uboot. Added ext4fs ls load and write support.
- */
- #include <common.h>
- #include <part.h>
- #include <config.h>
- #include <command.h>
- #include <image.h>
- #include <linux/ctype.h>
- #include <asm/byteorder.h>
- #include <ext_common.h>
- #include <ext4fs.h>
- #include <linux/stat.h>
- #include <malloc.h>
- #if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
- #include <usb.h>
- #endif
- #if !defined(CONFIG_DOS_PARTITION) && !defined(CONFIG_EFI_PARTITION)
- #error DOS or EFI partition support must be selected
- #endif
- uint64_t total_sector;
- uint64_t part_offset;
- #if defined(CONFIG_CMD_EXT4_WRITE)
- static uint64_t part_size;
- static uint16_t cur_part = 1;
- #endif
- #define DOS_PART_MAGIC_OFFSET 0x1fe
- #define DOS_FS_TYPE_OFFSET 0x36
- #define DOS_FS32_TYPE_OFFSET 0x52
- int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,
- char *const argv[])
- {
- if (do_ext_load(cmdtp, flag, argc, argv))
- return -1;
- return 0;
- }
- int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
- {
- if (do_ext_ls(cmdtp, flag, argc, argv))
- return -1;
- return 0;
- }
- #if defined(CONFIG_CMD_EXT4_WRITE)
- static int ext4_register_device(block_dev_desc_t *dev_desc, int part_no)
- {
- unsigned char buffer[SECTOR_SIZE];
- disk_partition_t info;
- if (!dev_desc->block_read)
- return -1;
- /* check if we have a MBR (on floppies we have only a PBR) */
- if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) {
- printf("** Can't read from device %d **\n", dev_desc->dev);
- return -1;
- }
- if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
- buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
- /* no signature found */
- return -1;
- }
- /* First we assume there is a MBR */
- if (!get_partition_info(dev_desc, part_no, &info)) {
- part_offset = info.start;
- cur_part = part_no;
- part_size = info.size;
- } else if ((strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET],
- "FAT", 3) == 0) || (strncmp((char *)&buffer
- [DOS_FS32_TYPE_OFFSET],
- "FAT32", 5) == 0)) {
- /* ok, we assume we are on a PBR only */
- cur_part = 1;
- part_offset = 0;
- } else {
- printf("** Partition %d not valid on device %d **\n",
- part_no, dev_desc->dev);
- return -1;
- }
- return 0;
- }
- int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc,
- char *const argv[])
- {
- const char *filename = "/";
- int part_length;
- unsigned long part = 1;
- int dev;
- char *ep;
- unsigned long ram_address;
- unsigned long file_size;
- disk_partition_t info;
- struct ext_filesystem *fs;
- if (argc < 6)
- return cmd_usage(cmdtp);
- dev = (int)simple_strtoul(argv[2], &ep, 16);
- ext4_dev_desc = get_dev(argv[1], dev);
- if (ext4_dev_desc == NULL) {
- printf("Block device %s %d not supported\n", argv[1], dev);
- return 1;
- }
- if (init_fs(ext4_dev_desc))
- return 1;
- fs = get_fs();
- if (*ep) {
- if (*ep != ':') {
- puts("Invalid boot device, use `dev[:part]'\n");
- goto fail;
- }
- part = simple_strtoul(++ep, NULL, 16);
- }
- /* get the filename */
- filename = argv[3];
- /* get the address in hexadecimal format (string to int) */
- ram_address = simple_strtoul(argv[4], NULL, 16);
- /* get the filesize in base 10 format */
- file_size = simple_strtoul(argv[5], NULL, 10);
- /* set the device as block device */
- part_length = ext4fs_set_blk_dev(fs->dev_desc, part);
- if (part_length == 0) {
- printf("Bad partition - %s %d:%lu\n", argv[1], dev, part);
- goto fail;
- }
- /* register the device and partition */
- if (ext4_register_device(fs->dev_desc, part) != 0) {
- printf("Unable to use %s %d:%lu for fattable\n",
- argv[1], dev, part);
- goto fail;
- }
- /* get the partition information */
- if (!get_partition_info(fs->dev_desc, part, &info)) {
- total_sector = (info.size * info.blksz) / SECTOR_SIZE;
- fs->total_sect = total_sector;
- } else {
- printf("error : get partition info\n");
- goto fail;
- }
- /* mount the filesystem */
- if (!ext4fs_mount(part_length)) {
- printf("Bad ext4 partition %s %d:%lu\n", argv[1], dev, part);
- goto fail;
- }
- /* start write */
- if (ext4fs_write(filename, (unsigned char *)ram_address, file_size)) {
- printf("** Error ext4fs_write() **\n");
- goto fail;
- }
- ext4fs_close();
- deinit_fs(fs->dev_desc);
- return 0;
- fail:
- ext4fs_close();
- deinit_fs(fs->dev_desc);
- return 1;
- }
- U_BOOT_CMD(ext4write, 6, 1, do_ext4_write,
- "create a file in the root directory",
- "<interface> <dev[:part]> [Absolute filename path] [Address] [sizebytes]\n"
- " - create a file in / directory");
- #endif
- U_BOOT_CMD(ext4ls, 4, 1, do_ext4_ls,
- "list files in a directory (default /)",
- "<interface> <dev[:part]> [directory]\n"
- " - list files from 'dev' on 'interface' in a 'directory'");
- U_BOOT_CMD(ext4load, 6, 0, do_ext4_load,
- "load binary file from a Ext4 filesystem",
- "<interface> <dev[:part]> [addr] [filename] [bytes]\n"
- " - load binary file 'filename' from 'dev' on 'interface'\n"
- " to address 'addr' from ext4 filesystem");
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